DE1708063A1 - Cup-like breathing mask - Google Patents

Description

Species reporter: Ludwigshafen / Rh., June 23, 1967

^{P. kkk9 F / fel}

Louis Giffard
Saint-Brieuc / France rue Baratoux

Representative:

Patent attorney

Dipl.-Ing. Adolf H. Fischer Ludwigshafen am Rhein Richard-Wagner-Strasse 22

Cup-like breathing mask

The invention relates to a breathing mask with a pilgrim shell which is used in surgery and in the laboratory and is used to carry out certain work in stale air and is very light in weight owns.

It is known to design such masks as a shell which is formed into a filtering felt, "which is made of consists of a tangle of fibers, the shell being held on the face of the user by means of a strap and also a nose cap attached to the shell is deformable to achieve the desired seal is provided as described in the applicant's French patent 1 438 53 ^.

This cap and the fastening straps are handmade, which puts a heavy burden on the cost price of such masks.

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109817 / (K

The invention has set itself the task of eliminating these night parts and producing masks that are weighted light and can be produced simply and cheaply.

The invention consists in that the mask consists of an outer shell on which the fastening straps and the resilient nose cap are attached, and an inner shell whose filtration material is is exchangeable, consists, these two shells are shaped so that they can be placed one inside the other.

In this way, the outer shell, which can be formed in a coarse-meshed fabric, serves as a holder the inner shell, which forms an insert, the outer shell being used a few times during the inner shell is changed every time it is used.

Since the manufacturing costs are particularly important for the outer shell, it is quite evident that that the cost price is significantly reduced for each operation, since an outer shell may be can hold up to a hundred inner shells in use.

In order to achieve this favorable result, there are no fasteners between the two shells intended.

According to the invention, the two shells are only through. the nesting of the complementary shells held in such a way that the inner shell neither

10 9 8 17/0470 - 3 -

slide nor twist.

Further features of the invention emerge from the following description of an exemplary embodiment in connection with the drawing and the claims.

The drawing shows an example of a breathing mask according to the invention, the two shells are shown in a separate, expanded position.

The mask consists of an outer shell 1, which

wearing the nose cap 2 and the fastening straps 3, i

and an inner shell 4, which serves as an insert.

The shell 1 can be formed from a wide-meshed fabric, e.g. from polyamide, during the shell insert 4 is made from a filtering mushroom.

The outer shape of the shell 4 corresponds to the inner shape of the shell 1, so that a perfect fit the shell 4 in the shell 1 comes about. This means that the shell 4 is placed on the face of the user the shell 1, which is held by the straps 3 is held.

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Claims (3)

Claims 1) breathing mask, characterized in that it consists of an outer shell on which the fastening straps and the resilient nasal cap is attached and an inner cup, the filtering component of which is replaceable is, there are, these two.Schalen are shaped so that they can be inserted into each other are. 2) breathing mask according to claim 1, characterized in that that the outer shell consists of a coarse-meshed fabric. 3) breathing mask according to claim 1, characterized in that the inner in the outer Shell is held by being enclosed by the outer shell. 109817/04 7 0